Posted by Nathon on January 16, 2014 at 09:41:30 from (216.227.55.31):
I have a 400 gas start diesel. The engine has about 300 hours on it since a complete, out of frame, overhaul by me. My third one of these types of engines. Nothing was omitted during this event. Crank ground .010 over, reconditioned connecting rods, every known bearing replaced, new pistons and wrist pins, all parts boiled and thoroughly cleaned etc. It ran great with super oil pressue but now it has a knock. I have torn it apart to find that the wrist pin bushings have failed. The holes in the bushings appeared to have been properly aligned with the oil gallery in the connecting rod. I can see nothing that was assembled incorrectly. I know this is a high wear area for this type of engine, over the long term, but does anyone have any ideas why these failed so prematurely?
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Today's Featured Article - Pitfalls of Tractor Engine Rebuilds - by Chris Pratt. The first pop after you have put the machine together with your own hands is exciting and pleasing. The whole experience can be marred if one moves too fast and makes too many assumptions that they can just use "as is" some parts they should be closely scrutinizing and possibly attended to. In such cases, rework makes what could have been a fun project turn into an irritant or even a nightmare. Minor Irritants To give you an example of an minor but irritating proble
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